/* ===== SIDEBAR ===== */
.sidebar{
    position: fixed;
    top: 0;
    left: -300px;          /* Sembunyikan sidebar */
    width: 300px;
    height: 100vh;
    background: linear-gradient(135deg, #0F172A, #334155);
    color: white;
    padding: 30px 20px;
    transition: left .3s ease;
    z-index: 1000;
    overflow-y: auto;
}

/* Bila sidebar dibuka */
.sidebar.active{
    left: 0;
}

/* ===== CLOSE BUTTON ===== */
.close-btn{
    position:absolute;
    top:15px;
    right:15px;
    width:35px;
    height:35px;
    display:flex;
    align-items:center;
    justify-content:center;
    background:rgba(255,255,255,0.15);
    border:none;
    border-radius:50%;
    color:white;
    font-size:20px;
    cursor:pointer;
    transition:.3s;
}


.close-btn:hover{
    background:#EF4444;
    transform:rotate(90deg);
}

.sidebar h2{
    color:white;
    font-size:22px;
    margin-bottom:35px;
    text-align:center;
    /* bagi ruang sebab ada button X */
    margin-top:20px;
}

.sidebar nav{
    display:flex;
    flex-direction:column;
    gap:10px;
}

.sidebar a{
    color:#CBD5E1;
    text-decoration:none;
    padding:14px 18px;
    border-radius:10px;
    transition:.3s;
}

.sidebar a:hover,
.sidebar a.active{
    background:#2563EB;
    color:#fff;
}

.overlay{
    position:fixed;
    top:0;
    left:0;
    width:100%;
    height:100%;
    background:rgba(0,0,0,.35);
    opacity:0;
    visibility:hidden;
    transition:.3s;
    z-index:999;
}

.overlay.active{
    opacity:1;
    visibility:visible;
}